GB/T 12459  弯头 DN 25-Sch4090EL6 RF 6511l50(brR/S=�0 Sch10

DN25-Sch40 90EL6 RF 6511l50(brR/S=�0 Sch10

WN50(B)-63 FM S=620090/56 rf4- rj

SO15(a)-16 RF b=31S=3,)-6 rfB-16rf S=5

pl80a)-16 rfC00 RL

2 G 450-2.53.5 d1-0S=�₠B=1

WN250(B)-16 FM H=50RF S=7.1f s200

WN25-300G D=1/R

WN350-150 RF SCH40

WN400(B)-2